Shale Lamination and Its Influence on Shale Reservoir Quality of Wufeng Formation-Longmaxi Formation in Jiaoshiba Area

被引：8
|
作者：
Wang C. [1 ]
Zhang B. [1 ]
Shu Z. [1 ]
Lu Y. [1 ]
Bao H. [1 ]
Yang W. [1 ]
Liu C. [1 ]
Li K. [1 ]
机构：
[1] SINOPEC Jianghan Oilfield Company, Exploration and Development Research Institute, Wuhan
来源：
Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2019年 / 44卷 / 03期
关键词：
Jiaoshiba area; Lamination; Longmaxi Formation; Petroleum geology; Pore; Shale; Wufeng Formation;
D O I：
10.3799/dqkx.2019.018
中图分类号：
学科分类号：
摘要：
There is no in-depth study on the impact of marine organic-rich shale lamination on reservoir quality. In this paper, according to lamination mineralogical composition, the shale lamination can be divided into sillceous lamina, calcium lamina and clay lamina through thin section, NMR porosity and QEMSCAN. Besides, horizontal lamina, hybrid lamina, graded lamina, cut-fill cross lamina and wedge-shaped cross lamina are found in Wufeng Formation-Longmaxi Formation marine shale. Combined with the laminae density and maximum thickness of laminae, the interval of interest is divided into three lamination development phases, which are subdivided into weak development stage and strong development stage. Composited with shale lamination characteristics and reservoir characteristics, total organic matter content and organic pores were reduced in shale laminated strong development stage, with enhanced development of inorganic pores. The pore type and pore size distribution is influenced by the laminated development. © 2019, Editorial Department of Earth Science. All right reserved.
引用
收藏
页码：972 / 982
页数：10
相关论文
共 37 条
  • [1] Bahk J.J., Chough S.K., Han S.J., Origins and Paleoceanographic Significance of Laminated Muds from the Ulleung Basin, East Sea(Sea of Japan), Marine Geology, 162, 2-4, pp. 459-477, (2000)
  • [2] Bour I., Mattioli E., Pittet B., Nannofacies Analysis as a Tool to Reconstruct Paleoenvironmental Changes during the Early Toarcian Anoxic Event, Palaeogeography, Palaeoclimatology, Palaeoecology, 249, 1-2, pp. 58-79, (2007)
  • [3] Caplan M.L., Marc Bustin R., Palaeoenvironmental and Palaeoceanographic Controls on Black, Laminated Mudrock Deposition: Example from Devonian-Carboniferous Strata, Alberta, Canada, Sedimentary Geology, 145, 1-2, pp. 45-72, (2001)
  • [4] Chen L., Lu Y.C., Jiang S., Et al., Heterogeneity of the Lower Silurian Longmaxi Marine Shale in the Southeast Sichuan Basin of China, Marine and Petroleum Geology, 65, pp. 232-246, (2015)
  • [5] Chen S.B., Han Y.F., Fu C.Q., Et al., Micro and Nano-Size Pores of Clay Minerals in Shale Reservoirs: Implication for the Accumulation of Shale Gas, Sedimentary Geology, 342, pp. 180-190, (2016)
  • [6] Cheng M., Luo X.R., Lei Y.H., Et al., The Distribution, Fractal Characteristic and Thickness Estimation of Silty Laminae and Beds in the Zhangjiatan Shale, Ordos Basin, Natural Gas Geoscience, 26, 5, pp. 845-854, (2015)
  • [7] Curtis M.E., Sondergeld C.H., Ambrose R.J., Et al., Microstructural Investigation of Gas Shales in Two and Three Dimensions Using Nanometer-Scale Resolution Imaging, AAPG Bulletin, 96, 4, pp. 665-677, (2012)
  • [8] Dean J.M., Kemp A.E.S., Pearce R.B., Palaeo-Flux Records from Electron Microscope Studies of Holocene Laminated Sediments, Saanich Inlet, British Columbia, Marine Geology, 174, 1-4, pp. 139-158, (2001)
  • [9] Fauchille A.L., Ma L., Rutter E., Et al., An Enhanced Understanding of the Basinal Bowland Shale in Lancashire(UK), through Microtextural and Mineralogical Observations, Marine and Petroleum Geology, 86, pp. 1374-1390, (2017)
  • [10] Guo T.L., Key Geological Issues and Main Controls on Accumulation and Enrichment of Chinese Shale Gas, Petroleum Exploration and Development, 43, 3, pp. 317-326, (2016)
1234